IPv4 R&E Routing Table Report 20:30 GMT Fri 26 Sep, 2025 IPv4 BGP Table (R&E) as seen at PREGINET. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/PREGINET/ Analysis Summary ---------------- BGP routing table entries examined: 72193 Prefixes after maximum aggregation (per Origin AS): 34381 Deaggregation factor: 2.10 Unique aggregates announced (without unneeded subnets): 47068 Number of IPv4 prefixes with a valid ROA: 40141 Number of IPv4 prefixes with an invalid ROA: 37 Number of IPv4 prefixes with no ROA: 32015 Total ASes present in the Internet Routing Table: 8704 Prefixes per ASN: 8.29 Origin-only ASes present in the Internet Routing Table: 7186 Origin ASes announcing only one prefix: 3905 Transit ASes present in the Internet Routing Table: 1518 Transit-only ASes present in the Internet Routing Table: 434 Paths with bogon ASNs present in the IPv4 Routing Table: 1 Average AS path length visible in the Internet Routing Table: 5.8 Max AS path length visible: 53 Max AS path prepend of ASN (212940) 45 Prefixes from unregistered ASNs in the Routing Table: 77 Number of instances of unregistered ASNs: 77 Number of 32-bit ASNs allocated by the RIRs: 47561 Number of 32-bit ASNs visible in the Routing Table: 3863 Prefixes from 32-bit ASNs in the Routing Table: 11470 Number of bogon 32-bit ASNs visible in the Routing Table: 2 Special use prefixes present in the Routing Table: 1 Prefixes being announced from unallocated address space: 9 Number of addresses announced to Internet: 313730560 Equivalent to 18 /8s, 179 /16s and 38 /24s Percentage of available address space announced: 8.5 Percentage of allocated address space announced: 8.5 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 29421 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 11648 Total APNIC prefixes after maximum aggregation: 5425 APNIC Deaggregation factor: 2.15 Prefixes being announced from the APNIC address blocks: 11792 Unique aggregates announced from the APNIC address blocks: 7728 APNIC Region origin ASes present in the Internet Routing Table: 906 APNIC Prefixes per ASN: 13.02 APNIC Region origin ASes announcing only one prefix: 320 APNIC Region transit ASes present in the Internet Routing Table: 121 Average APNIC Region AS path length visible: 5.8 Max APNIC Region AS path length visible: 37 Number of APNIC region 32-bit ASNs visible in the Routing Table: 368 Number of APNIC addresses announced to Internet: 54209024 Equivalent to 3 /8s, 59 /16s and 42 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-155961 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 19309 Total ARIN prefixes after maximum aggregation: 9766 ARIN Deaggregation factor: 1.98 Prefixes being announced from the ARIN address blocks: 18583 Unique aggregates announced from the ARIN address blocks: 14507 ARIN Region origin ASes present in the Internet Routing Table: 1336 ARIN Prefixes per ASN: 13.91 ARIN Region origin ASes announcing only one prefix: 799 ARIN Region transit ASes present in the Internet Routing Table: 157 Average ARIN Region AS path length visible: 4.7 Max ARIN Region AS path length visible: 50 Number of ARIN region 32-bit ASNs visible in the Routing Table: 331 Number of ARIN addresses announced to Internet: 142927616 Equivalent to 8 /8s, 132 /16s and 231 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-402332 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 27389 Total RIPE prefixes after maximum aggregation: 14440 RIPE Deaggregation factor: 1.90 Prefixes being announced from the RIPE address blocks: 28229 Unique aggregates announced from the RIPE address blocks: 18665 RIPE Region origin ASes present in the Internet Routing Table: 3701 RIPE Prefixes per ASN: 7.63 RIPE Region origin ASes announcing only one prefix: 1785 RIPE Region transit ASes present in the Internet Routing Table: 585 Average RIPE Region AS path length visible: 6.0 Max RIPE Region AS path length visible: 50 Number of RIPE region 32-bit ASNs visible in the Routing Table: 1233 Number of RIPE addresses announced to Internet: 95400960 Equivalent to 5 /8s, 175 /16s and 180 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 12488 Total LACNIC prefixes after maximum aggregation: 4508 LACNIC Deaggregation factor: 2.77 Prefixes being announced from the LACNIC address blocks: 12166 Unique aggregates announced from the LACNIC address blocks: 5773 LACNIC Region origin ASes present in the Internet Routing Table: 2246 LACNIC Prefixes per ASN: 5.42 LACNIC Region origin ASes announcing only one prefix: 970 LACNIC Region transit ASes present in the Internet Routing Table: 519 Average LACNIC Region AS path length visible: 7.2 Max LACNIC Region AS path length visible: 25 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 1903 Number of LACNIC addresses announced to Internet: 18215424 Equivalent to 1 /8s, 21 /16s and 242 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 1282 Total AfriNIC prefixes after maximum aggregation: 187 AfriNIC Deaggregation factor: 6.86 Prefixes being announced from the AfriNIC address blocks: 1414 Unique aggregates announced from the AfriNIC address blocks: 386 AfriNIC Region origin ASes present in the Internet Routing Table: 59 AfriNIC Prefixes per ASN: 23.97 AfriNIC Region origin ASes announcing only one prefix: 31 AfriNIC Region transit ASes present in the Internet Routing Table: 27 Average AfriNIC Region AS path length visible: 6.8 Max AfriNIC Region AS path length visible: 15 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 28 Number of AfriNIC addresses announced to Internet: 2967296 Equivalent to 0 /8s, 45 /16s and 71 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 4766 1965 6031 951 KIXS-AS-KR Korea Telecom, KR 9381 453 62 179 HKBNES-AS-AP HKBN Enterprise Solutions HK 7497 452 180 23 CSTNET-AS-AP Computer Network Information 10036 435 151 167 CNM-AS-KR DLIVE, KR 23584 276 21 66 HYROADPUSAN-AS-KR PUSAN CABLE TV SYSTEM C 24203 270 29 80 NAPXLNET-AS-ID PT XL Axiata, ID 9319 201 23 71 HCNCHUNGJU-AS-KR HCN CHUNGBUK CABLE TV SY 38701 201 13 83 PIRANHA-AS-KR Piranha Systems, KR 4538 184 4192 72 ERX-CERNET-BKB China Education and Resear 38623 173 20 9 VIETTELCAMBODIA-AS-AP ISPIXP IN CAMBODIA Complete listing at https://bgp.nsrc.org/REN/PREGINET/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 30036 2482 342 669 MEDIACOM-ENTERPRISE-BUSINESS, US 16509 2406 3815 1424 AMAZON-02, US 20115 2237 3091 551 CHARTER-20115, US 11492 1914 133 1057 CABLEONE, US 714 1196 4391 6 APPLE-ENGINEERING, US 8075 824 16026 689 MICROSOFT-CORP-MSN-AS-BLOCK, US 10796 635 1879 297 TWC-10796-MIDWEST, US 12083 553 191 88 WOW-INTERNET, US 2152 467 51 282 CENIC-2152, US 33363 380 1416 214 BHN-33363, US Complete listing at https://bgp.nsrc.org/REN/PREGINET/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12389 2985 2201 947 ROSTELECOM-AS PJSC Rostelecom. Technical 49505 933 101 397 SELECTEL, RU 9123 679 42 326 TIMEWEB-AS, RU 21299 428 77 62 KAR-TEL-AS Almaty, Republic of Kazakhstan 42772 374 63 104 A1-BY-AS, BY 50340 358 38 226 SELECTEL-MSK, RU 198610 345 18 64 BEGET-AS, RU 680 283 1883 250 DFN Verein zur Foerderung eines Deutschen 48503 239 15 61 TELE2-KZ Tele2 Kazakhstan, KZ 25106 224 61 15 MTSBY-AS, BY Complete listing at https://bgp.nsrc.org/REN/PREGINET/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 2455 708 248 UNINET, MX 8167 345 1079 81 V tal, BR 7738 289 907 87 V tal, BR 28201 219 16 28 Companhia Itabirana Telecomunicacoes Ltda 1916 204 177 41 Rede Nacional de Ensino e Pesquisa, BR 28391 159 10 71 Universidad Juarez Autonoma de Tabasco, M 262287 141 24 123 Latitude.sh LTDA, BR 271640 129 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 11340 110 9 50 Red Universitaria Nacional, CL 19089 107 18 45 Scala Data Centers, BR Complete listing at https://bgp.nsrc.org/REN/PREGINET/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 36914 565 82 3 KENET-AS, KE 2018 376 318 69 TENET-1, ZA 30999 98 68 5 EMTEL-AS-AP, MU 8094 47 48 18 PUKNET, ZA 37215 39 8 1 MAREN, MW 6879 24 2 9 ENSTINET-, EG 327700 12 16 1 MoRENet, MZ 37501 11 49 6 UOFS, ZA 37654 10 1 6 RwEdNet-AS, RW 36982 8 33 8 UCT, ZA Complete listing at https://bgp.nsrc.org/REN/PREGINET/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 12389 2985 2201 947 ROSTELECOM-AS PJSC Rostelecom. Technical 30036 2482 342 669 MEDIACOM-ENTERPRISE-BUSINESS, US 8151 2455 708 248 UNINET, MX 16509 2406 3815 1424 AMAZON-02, US 20115 2237 3091 551 CHARTER-20115, US 4766 1965 6031 951 KIXS-AS-KR Korea Telecom, KR 11492 1914 133 1057 CABLEONE, US 714 1196 4391 6 APPLE-ENGINEERING, US 49505 933 101 397 SELECTEL, RU 8075 824 16026 689 MICROSOFT-CORP-MSN-AS-BLOCK, US Complete listing at https://bgp.nsrc.org/REN/PREGINET/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 8151 2455 2207 UNINET, MX 30036 2482 1813 MEDIACOM-ENTERPRISE-BUSINESS, US 20115 2237 1686 CHARTER-20115, US 714 1196 1190 APPLE-ENGINEERING, US 4766 1965 1014 KIXS-AS-KR Korea Telecom, KR 16509 2406 982 AMAZON-02, US 11492 1914 857 CABLEONE, US 36914 565 562 KENET-AS, KE 49505 933 536 SELECTEL, RU 12083 553 465 WOW-INTERNET, US Complete listing at https://bgp.nsrc.org/REN/PREGINET/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 46123 UNALLOCATED 24.73.234.0/24 33363 BHN-33363, US 53771 UNALLOCATED 24.172.253.0/24 11426 TWC-11426-CAROLINAS, US 53657 UNALLOCATED 24.213.247.0/24 11351 TWC-11351-NORTHEAST, US 11835 UNALLOCATED 45.4.236.0/22 14868 Ligga Telecomunicacoes 397492 UNALLOCATED 47.45.33.0/24 22677 CHARTER-22677-MO-IL-C3, 396324 UNALLOCATED 66.57.112.0/24 11426 TWC-11426-CAROLINAS, US 26345 UNALLOCATED 71.13.182.0/24 20115 CHARTER-20115, US 46123 UNALLOCATED 71.46.221.0/24 33363 BHN-33363, US 395888 UNALLOCATED 71.92.235.0/24 33588 BRESNAN-33588, US Complete listing at https://bgp.nsrc.org/REN/PREGINET/data-badAS Prefixes from the Special Purpose Address Registry (Global) ----------------------------------------------------------- Prefix Origin AS Description 192.88.99.0/24 6939 HURRICANE, US Complete listing at https://bgp.nsrc.org/REN/PREGINET/data-spar Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 103.174.186.0/24 Origin: 138032 MHS-AS-AP MOS Hosting Services, BD 103.174.186.0/24 Transit: 9245 COMPASS-NZ-AP COMPASS, NZ 103.174.187.0/24 Origin: 138032 MHS-AS-AP MOS Hosting Services, BD 103.174.187.0/24 Transit: 9245 COMPASS-NZ-AP COMPASS, NZ 192.88.99.0/24 Origin: 6939 HURRICANE, US 192.88.99.0/24 Transit: 23855 SINGAREN-GIX-AS-AP Singapore Advanced Re 192.109.103.0/24 Origin: 63401 RESERVED, ZZ 192.109.103.0/24 Transit: 11427 TWC-11427-TEXAS, US 192.150.116.0/24 Origin: 20001 TWC-20001-PACWEST, US 192.150.116.0/24 Transit: 7843 TWC-7843-BB, US Complete listing at https://bgp.nsrc.org/REN/PREGINET/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:1 /9:2 /10:2 /11:8 /12:37 /13:57 /14:110 /15:289 /16:1407 /17:717 /18:1582 /19:2288 /20:3580 /21:4466 /22:7587 /23:7697 /24:42363 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 30036 2165 2482 MEDIACOM-ENTERPRISE-BUSINESS, US 12389 1904 2985 ROSTELECOM-AS PJSC Rostelecom. Technical Team, RU 8151 1358 2455 UNINET, MX 11492 1321 1914 CABLEONE, US 49505 649 933 SELECTEL, RU 9123 555 679 TIMEWEB-AS, RU 20115 548 2237 CHARTER-20115, US 36914 541 565 KENET-AS, KE 16509 514 2406 AMAZON-02, US 12083 430 553 WOW-INTERNET, US Complete listing at https://bgp.nsrc.org/REN/PREGINET/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:79 2:76 3:123 5:475 8:38 12:45 13:99 14:246 15:59 16:59 17:325 18:80 20:28 23:274 24:572 27:137 31:495 34:3 35:60 36:27 37:309 38:182 39:107 40:2 41:240 42:43 43:46 44:4 45:1220 46:609 47:43 49:137 50:290 52:179 54:20 57:8 58:100 59:103 60:7 61:208 62:309 63:88 64:172 65:54 66:110 67:277 68:56 69:183 70:23 71:68 72:214 74:150 75:54 76:59 77:330 78:102 79:229 80:194 81:270 82:283 83:153 84:108 85:383 86:101 87:293 88:73 89:415 90:131 91:1225 92:394 93:401 94:475 95:516 96:238 97:143 98:45 99:45 101:263 102:51 103:645 104:148 105:9 106:3 107:64 108:123 109:425 110:15 111:45 112:223 113:33 114:159 115:35 116:66 117:119 118:81 119:48 120:11 121:284 122:75 123:8 124:87 125:56 128:78 129:18 130:57 131:143 132:55 134:52 135:15 136:47 137:69 138:187 139:28 140:238 141:63 142:64 143:79 144:51 145:57 146:231 147:122 148:244 149:87 150:110 151:120 152:110 153:24 154:100 155:47 156:37 157:49 158:54 159:287 160:246 161:63 162:51 163:61 164:56 165:51 166:18 167:75 168:244 169:21 170:319 171:9 172:69 173:974 174:91 175:113 176:598 177:451 178:593 179:157 180:157 181:86 182:50 183:37 184:79 185:1650 186:227 187:653 188:387 189:313 190:357 191:61 192:1069 193:821 194:697 195:636 196:175 197:356 198:466 199:251 200:749 201:546 202:717 203:776 204:181 205:175 206:191 207:272 208:134 209:185 210:871 211:584 212:727 213:401 216:233 217:416 218:148 219:4 220:475 221:61 222:66 223:143 End of report